Checking Fuel Pressure
- Turn ignition off. Connect fuel gauge between fuel filter outlet and fuel tube using a "T" connector. Install fuel pump fuse.
- Start engine. Check fuel line connections for leaks. Check fuel pressure with engine idling. Disconnect vacuum hose from pressure regulator. Recheck fuel pressure.
- Compare fuel pressure readings on pressure gauge with specifications. See FUEL PRESSURE table. Release fuel system pressure as described in FUEL PRESSURE RELEASE . Disconnect fuel pressure gauge. Reconnect fuel lines. Start engine and check for fuel leaks.
FUEL PRESSURE
| Application | At Idle W/O Vacuum - psi (kg/cm2 ) | At Idle W/Vacuum - psi (kg/cm2 ) | |||
|---|---|---|---|---|---|
| Altima (2.5L & 3.5L), Maxima, Murano, Sentra (1.8L & 2.5L) & 350Z | (1) | 51 (3.57) | |||
| Frontier, Pathfinder & Xterra | 43 (3.00) | 34 (2.40) | |||
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